Allow 1/32" (about the thickness of a dime)
between the fastener head and the siding. Do not drive the nail
tight against the siding nail hem. (Exception: siding with a fabric
nail hem should be nailed tight.)

Drive nails straight and level to prevent distortion and buckling
of the panel.

Start in the center of the panel and work toward
the ends.

Center the fasteners in the slots to permit expansion
and contraction of the siding.

Space the fasteners a maximum of 16" apart for siding and
every 8" to 10" for accessories.

Start fastening corner posts in the top of the top
slots to hold them in position. Place all other fasteners in the
center of the slots.

Do not face-nail through siding, as it can cause
ripples.

Doors & Windows

J-channel is used around windows and doors to receive the siding.

Each piece of J-channel should extend beyond the
window to the outside edges of adjoining J-channel.

Attach the bottom piece first, snug to the window.

Notch and fold the bottom end of the side piece
inward to fit over the existing J-channel to prevent water from
entering under the sill.

Cut and bend the tab of the top piece of J-channel
down to provide flashing over the side J-channel.

Miter cut the overlapping flange at each corner at a 45° angle.
The underlying J-channel is not cut.

To install siding panels under or over windows, use a snaplock punch
to place lugs in the cut edge of the panel. Install undersill (utility)
trim under/over the window, as a receiver for the cut siding. Install
the siding panel, making sure the lugs (from the snaplock punch) lock
into the undersill trim.

Installing Panels

The first panel should be placed in the starter strip and securely
locked along its entire length.

Push up from the bottom until the lock is fully engaged (without
stretching the panel), reach up, and nail it. Make sure the panel
is securely locked before fastening. Allow hanging without strain.

Make certain that the panels move freely side-to-side
when fastened. Leave 1" clearance at all openings and stops for
expansion and contraction.

Check every fifth or sixth course for horizontal alignment. Also
check alignment with adjoining walls.

When panels overlap, make sure they overlap by 1" on the face
of the panel.

Stagger end laps so that no two courses are aligned vertically,
unless separated by three courses. Stagger overlaps by 3'. Expose
the factory finished edge.

Overlap joints away from entrances and away from the point of greatest
traffic (siding furthest from the entrance should be installed first).

Cutting Siding

Safety goggles are always recommended for cutting and nailing operations.

When using a circular saw, cut slowly with a reversed fine-tooth
(plywood) blade. Do not attempt to cut materials other than vinyl
with a reversed saw blade.

With tin snips, avoid closing the blades completely at the end of
a stroke for a neat, clean cut.

With a utility knife, score the vinyl face up with medium pressure
and snap it in half. It is not necessary to cut all the way through
the vinyl.